Does iced tea have caffeine?

Iced tea does contain caffeine. The main ingredient of iced tea is tea leaves, and these plants naturally contain caffeine. The amount of caffeine contained in a glass or pitcher of iced tea depends on a number of factors.

One particular brand of iced tea, Lipton, reportedly contains 48 milligrams of caffeine per 20-ounce bottle. There is actually a wide variety of caffeine levels in tea, depending on whether iced tea is pre-bottled or steeped at home, states Mayo Clinic. Instant iced tea can have anywhere between 11 and 47 milligrams per 8-ounce serving. Ready-to-drink bottled varieties contain between 5 and 40 milligrams per 8 ounces.